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Finding the Fourth Proportional to 34.76, 47.86 and 26.55

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Solution

The fourth proportional to 34.76, 47.86 and 26.55 is: 36.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    34.76 : 47.86 = 26.55 : x
  2. Step 2: Convert to fraction form
    34.76/47.86 = 26.55/x
  3. Step 3: Cross multiply
    34.76x = 47.86 × 26.55
  4. Step 4: Simplify right side
    34.76x = 1,270.62
  5. Step 5: Solve for x
    x = 1,270.62/34.76
  6. Step 6: Final answer
    x = 36.55

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Find fourth proportional to 17.38, 23.93 and 13.28
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.